thumb

Documentation

Index

• func Resize(newWidth, newHeight uint, img image.Image) image.Image
• func Thumbnail(maxWidth, maxHeight uint, img image.Image) image.Image
• type Thumb
  • func NewThumbFromFile(file io.Reader, name string) (*Thumb, error)
  • func (image *Thumb) CreateAvatar(uid uint) error
  • func (image *Thumb) GetSize() (int, int)
  • func (image *Thumb) GetThumb(width, height uint)
  • func (image *Thumb) Save(path string) (err error)

Functions

func Resize

func Resize(newWidth, newHeight uint, img image.Image) image.Image

func Thumbnail

func Thumbnail(maxWidth, maxHeight uint, img image.Image) image.Image

Thumbnail will downscale provided image to max width and height preserving original aspect ratio and using the interpolation function interp. It will return original image, without processing it, if original sizes are already smaller than provided constraints.

Types

type Thumb

type Thumb struct {
	// contains filtered or unexported fields
}

Thumb 缩略图

func NewThumbFromFile

func NewThumbFromFile(file io.Reader, name string) (*Thumb, error)

NewThumbFromFile 从文件数据获取新的Thumb对象， 尝试通过文件名name解码图像

func (*Thumb) CreateAvatar

func (image *Thumb) CreateAvatar(uid uint) error

CreateAvatar 创建头像

func (*Thumb) GetSize

func (image *Thumb) GetSize() (int, int)

GetSize 获取图像尺寸

func (*Thumb) GetThumb

func (image *Thumb) GetThumb(width, height uint)

GetThumb 生成给定最大尺寸的缩略图

func (*Thumb) Save

func (image *Thumb) Save(path string) (err error)

Save 保存图像到给定路径